因暖化造成全球氣候急劇變化,豪大雨集中且強度增強,造成排水系統未達原先預期保護標準,由於政府經費籌措困難、加以工程手段改善排水須時較長,有緩不濟急的情形,因此近年來有朝整合區域防洪資源研究之趨勢,期望藉由非工程手段提昇既設排水設施之保護標準,達到防洪、減洪、調洪之改善結果。本研究主要探討易淹水地區抽水站聯合運轉的可行性、操作時機及最佳操作水位,以屏東縣林邊鄉A幹線抽水站(抽水量為8.5cms)及放索溝抽水站(抽水量為14cms)為研究對象,採用美國環境保護署發展之都市暴雨逕流模式(Storm Water Management Model )作為分析方法,依據兩抽水站集水區之水文資料、地文參數及排水系統屬性資料,配合不同抽水機啟動組數及操作水位進行模擬,經最佳操作水位模擬結果,A幹線抽水站單獨運轉時由現況平均淹水深度55公分降低至平均淹水深度35公分,共減少了平均淹水深度20公分,且淹水潛勢範圍及淹水歷時縮短。以建議之最佳操作水位聯合運轉後由平均淹水深度35公分降至無淹水狀況,已達5年重現期防洪保護標準。
Due to global climate change, heavy rain concentrated and the intensity enhanced in recent years, causing drainage system is under the expected standards of protection. This study investigates the feasibility of joint operation of pumping stations in joint operation of pumping stations in high frequency flooding area of Pingtung County. A-Canal of Lin Bien (pumping capacity of 8.5CMS) and Font-Sor Trench Pumping Stations (pumping capacity of 14CMS) were used as study sites where the Storm Water Management Model deveoped by US EPA were applied. Based on the simulation results, it is found that the average inundation depth decreses from 55 cm to 35 cm while A-Canal pumping station operated alone. Besides there will be no inundation occurred when the two stations operated jointly under the condition of optimum operation water level suggested herein.